//因为正好没编译器
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <conio.h>
int main(void)
{
    time_t t;
    int a[60], i, j, k;
    system("COLOR 02");
    srand((unsigned) time(&t));
    while(!getch())
    {
        for(i = 0;i <= 60;i += 5)
        {
            k = rand()%5;
            for(j = 0;j < k;j++)
                a[i+j] = rand() % 2;
        }
        for(i = 0;i <= 60;i++)
            if(a[i]==1 || a[i]==0)
                printf("%d",a[i]);
            else printf(" ");
    }
    return 0;
}

再来别人的bat,谁能翻译?
@echo off
title 数码雨效果
color 02
setlocal ENABLEDELAYEDEXPANSION
for /l %%i in (1,1,80) do (
set Down%%i=0
)
:rain
for /l %%j in (1,1,80) do (
set /a guxing%%j-=1
if !guxing%%j! LSS 0 (
set /a hanye%%j=!random!%%4
set /a guxing%%j=!random!%%15+10
)
if "!hanye%%j!" == "1" (
set /a shu=!random!%%2
set /p=!shu!<NUL
) else (
set /p= <NUL
)
)
goto rain

while(!getch())

另外while里少了一个换行